Between the late 1930s and 1960s Dichter became famous for transforming the fates of businesses such as Procter & Gamble, Exxon, Chrysler, General Mills and DuPont. His insight changed the way hundreds of products were sold, from cars to cake mix. He pioneered research techniques such as the focus group, understood the power of word-of-mouth persuasion and earned startling fees for his theories. By the late 1950s his global business reached an annual turnover of $1m ($8m today), and he enjoyed a reputation as the Freud of the supermarket age.
